穿层深孔爆破提高瓦斯抽放量  

Increasing Suction Quantity of Firedamp by Long Hole Blasting in Crossing Hole

作　　者：蓝成仁[1] 

机构地区：[1]河北建筑科技学院,河北邯郸056038

出　　处：《煤矿安全》2003年第8期14-16,共3页Safety in Coal Mines

摘　　要：简要论述了深孔爆破提高瓦斯抽放的机理 ,以煤体中柱状装药爆炸后的裂隙圈半径进行了计算。进行了深孔爆破的现场试验 ,试验结果表明穿层深孔爆破可以有效地增加瓦斯抽放量。The principle of increasing gas emission rate by long hole blasting in the crossing hole is discussed. The radius cracked zone in coal seam caused by long hole blasting is calculated. The site test of long hole blasting in coal seam is carried out. The test results indicate that long hole blasting in the crossing hole can improve the suction quantity of firedamp effectively.

关 键 词：煤层 穿层钻孔 瓦斯抽放 透气性 深孔爆破 

分 类 号：TD712.62[矿业工程—矿井通风与安全]